File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/llvm/lib/Target/BPF

usr / src / contrib / llvm-project / llvm / lib / Target / BPF /

📁 ..
📁 AsmParser
📄 BPF.h(1.33 KB)
📄 BPF.td(1.63 KB)
📄 BPFAbstractMemberAccess.cpp(33.35 KB)
📄 BPFAsmPrinter.cpp(5.11 KB)
📄 BPFCORE.h(1.16 KB)
📄 BPFCallingConv.td(1.79 KB)
📄 BPFFrameLowering.cpp(1.49 KB)
📄 BPFFrameLowering.h(1.46 KB)
📄 BPFISelDAGToDAG.cpp(16.73 KB)
📄 BPFISelLowering.cpp(28.04 KB)
📄 BPFISelLowering.h(5.33 KB)
📄 BPFInstrFormats.td(2.81 KB)
📄 BPFInstrInfo.cpp(8.23 KB)
📄 BPFInstrInfo.h(2.43 KB)
📄 BPFInstrInfo.td(30.55 KB)
📄 BPFMCInstLower.cpp(2.62 KB)
📄 BPFMCInstLower.h(1.17 KB)
📄 BPFMIChecking.cpp(6.54 KB)
📄 BPFMIPeephole.cpp(15.45 KB)
📄 BPFMISimplifyPatchable.cpp(10.86 KB)
📄 BPFPreserveDIType.cpp(3.93 KB)
📄 BPFRegisterInfo.cpp(3.96 KB)
📄 BPFRegisterInfo.h(1.23 KB)
📄 BPFRegisterInfo.td(1.51 KB)
📄 BPFSelectionDAGInfo.cpp(1.63 KB)
📄 BPFSelectionDAGInfo.h(1.24 KB)
📄 BPFSubtarget.cpp(1.84 KB)
📄 BPFSubtarget.h(2.83 KB)
📄 BPFTargetMachine.cpp(4.43 KB)
📄 BPFTargetMachine.h(1.41 KB)
📄 BTF.def(1015 B)
📄 BTF.h(8.27 KB)
📄 BTFDebug.cpp(41.2 KB)
📄 BTFDebug.h(11.66 KB)
📁 Disassembler
📁 MCTargetDesc
📁 TargetInfo

Editing: BPFSelectionDAGInfo.cpp

//===-- BPFSelectionDAGInfo.cpp - BPF SelectionDAG Info -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the BPFSelectionDAGInfo class.
//
//===----------------------------------------------------------------------===//

#include "BPFTargetMachine.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/IR/DerivedTypes.h"
using namespace llvm;

#define DEBUG_TYPE "bpf-selectiondag-info"

SDValue BPFSelectionDAGInfo::EmitTargetCodeForMemcpy(
    SelectionDAG &DAG, const SDLoc &dl, SDValue Chain, SDValue Dst, SDValue Src,
    SDValue Size, Align Alignment, bool isVolatile, bool AlwaysInline,
    MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const {
  // Requires the copy size to be a constant.
  ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
  if (!ConstantSize)
    return SDValue();

unsigned CopyLen = ConstantSize->getZExtValue();
  unsigned StoresNumEstimate = alignTo(CopyLen, Alignment) >> Log2(Alignment);
  // Impose the same copy length limit as MaxStoresPerMemcpy.
  if (StoresNumEstimate > getCommonMaxStoresPerMemFunc())
    return SDValue();

SDVTList VTs = DAG.getVTList(MVT::Other, MVT::Glue);

Dst = DAG.getNode(BPFISD::MEMCPY, dl, VTs, Chain, Dst, Src,
                    DAG.getConstant(CopyLen, dl, MVT::i64),
                    DAG.getConstant(Alignment.value(), dl, MVT::i64));

return Dst.getValue(0);
}

003 File Manager

Editing: BPFSelectionDAGInfo.cpp

Upload File

Create Folder